Patents Represented by Attorney Joseph T. Cohen

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  • Method for forming Glauber's salt crystals of reduced size by including a fluorine-containing surfactant
    Patent number: 4267879
    Abstract: The average size of Glauber's salt crystals formed by crystallization of Na.sub.2 SO.sub.4 from aqueous solution in systems comprising Na.sub.2 SO.sub.4, H.sub.2 O and Glauber's salt is decreased by including a fluorine-containing surfactant in the system.
    Type: Grant
    Filed: August 21, 1979
    Date of Patent: May 19, 1981
    Assignee: General Electric Company
    Inventors: Carlyle S. Herrick, Fred F. Holub
  • Novel flame retardant polycarbonate compositions
    Patent number: 4268429
    Abstract: This invention is concerned with a new class of flame retardant polycarbonate compositions. More particularly, the invention is concerned with admixtures of an aromatic polycarbonate and a flame retardant additive combination consisting of a halogenated organic compound and an alkali or alkaline earth metal salt of an inorganic sulfur compound. The flame retardant polycarbonates can be molded or formed into flame retardant articles such as films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: May 19, 1981
    Assignee: General Electric Company
    Inventors: Jimmy L. Webb, Joseph B. Williams
  • Method for forming Glauber's salt crystals with reduced encapsulation by the addition of ethylene glycol monobutyl ether
    Patent number: 4268405
    Abstract: Encapsulation of Na.sub.2 SO.sub.4 particles by Glauber's salt crystals formed by crystallization of Na.sub.2 SO.sub.4 from aqueous solution in systems comprising Na.sub.2 SO.sub.4, H.sub.2 O and Glauber's salt is decreased by including ethylene glycol monobutyl ether in the system.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: May 19, 1981
    Assignee: General Electric Company
    Inventors: Carlyle S. Herrick, Kenneth P. Zarnoch
  • UV-Stabilized polycarbonates
    Patent number: 4264680
    Abstract: Polycarbonate resins can be stabilized against the adverse influence of UV light by incorporating either directly into the resin or by means of a coating on the surface of the polycarbonate resin, an effective amount of a dicyano stabilizer.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: April 28, 1981
    Assignee: General Electric Company
    Inventor: Blair T. Anthony
  • Dichloroformates
    Patent number: 4263222
    Abstract: Certain dichloroformates are described which have utility for imparting UV stability to polycarbonate resins which are interpolymerized with the former.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: April 21, 1981
    Assignee: General Electric Company
    Inventor: Ta-Yen Ching
  • Catalytic aromatic salicylate process
    Patent number: 4260802
    Abstract: A catalytic aromatic salicylate process comprising contacting a phenol, carbon monoxide, a base, and a Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum, an oxidant having an oxidation potential greater than that of said selected Group VIIIB element, and recovering at least a portion of the resulting salicylate.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: April 7, 1981
    Assignee: General Electric Company
    Inventor: John E. Hallgren
  • UV stabilized polycarbonate resins
    Patent number: 4260719
    Abstract: Polycarbonate resins can be rendered resistant to ultraviolet light by chain-stopping the resins with certain cyanoacrylate moieties.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: April 7, 1981
    Assignee: General Electric Company
    Inventor: Ta-Yen Ching
  • UV Stabilized polycarbonate resins
    Patent number: 4260732
    Abstract: UV stabilizing units are incorporated in a polycarbonate molecule to impart UV stability to the polycarbonate.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: April 7, 1981
    Assignee: General Electric Company
    Inventor: Ta-Yen Ching
  • Blends of polyetherimides and polyamideimides
    Patent number: 4258155
    Abstract: Blends of polyetherimides and polyamideimides have been found to be useful in the coating and molding arts.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: March 24, 1981
    Assignee: General Electric Company
    Inventors: Fred F. Holub, Gary A. Mellinger
  • Coating solution of polyetherimide-forming monomers in a solvent system including water
    Patent number: 4255471
    Abstract: Disclosed is a solution including an aromatic bis (ether dicarboxylic acid) component, an organic diamine component and a solvent system including a water-soluble organic solvent component, which may be a dipolar aprotic solvent or a monoalkyl ether of ethylene glycol or of diethylene glycol, and optionally water. The solution may be coated on a substrate and polymerized to form high quality polyetherimide coatings.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: March 10, 1981
    Assignee: General Electric Company
    Inventors: Edith M. Boldebuck, Eugene G. Banucci
  • Acidic mixed oxide catalytic de-alkylation of tertiary-alkyl-ether-alkanols
    Patent number: 4254290
    Abstract: A de-alkylation process which comprises contacting a t-alkylether-alkanol, e.g. 4-t-butylether-n-butan-1-ol, with an acidic solid mixed oxide, e.g. silica-alumina, catalyst which results in the formation of alkanediols, e.g. 1,4-butanediol, in the substantial absence of undesirable side reactions, e.g. the formation of tetrahydrofuran. The resulting alkanediols are useful in the preparation of polyesters, e.g. polybutylene terephthalates.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: March 3, 1981
    Assignee: General Electric Company
    Inventors: Gregory R. Chambers, William E. Smith
  • Novel halobisphenolethylene polycarbonate-vinyl aromatic resin blends
    Patent number: 4247662
    Abstract: This invention is concerned with a new class of halobisphenolethylene polycarbonate-vinyl aromatic resin blends. More particularly, the invention is concerned with halobisphenolethylene polycarbonate-vinyl aromatic resin blends which exhibit enhanced physical and/or chemical properties. The halobisphenolethylene polycarbonate-vinyl aromatic resin blends are suitable for the manufacture of filaments, fibers, films, sheets, laminates and articles of manufacture including reinforced articles by conventional manufacturing techniques.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: January 27, 1981
    Assignee: General Electric Company
    Inventor: Douglas P. Thomas
  • Chloroformates of cyanoacrylates
    Patent number: 4247475
    Abstract: Certain cyanochloroformates are described which have utility for imparting UV stability to polycarbonate resins.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: January 27, 1981
    Assignee: General Electric Company
    Inventor: Ta-Yen Ching
  • Block polymers of polyphenylene oxide and polystyrene
    Patent number: 4238584
    Abstract: Linear, branched and/or cross-linked block polymers of polyphenylene oxides and polystyrene are described. The polyphenylene oxide-polystyrene block polymers can be molded, calendered, or extruded as films, sheets, fibers, laminates or other useful articles of manufacture.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: December 9, 1980
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Process of forming urethane-coupled polymers of quinone-coupled polyphenylene oxides
    Patent number: 4238580
    Abstract: A process of forming linear, branched and/or cross-linked urethane-coupled polymers of quinone-coupled polyphenylene oxides is described which comprises contacting in a high fluid shear stress reaction medium a polyfunctional isocyanate with a quinone-coupled polyphenylene oxide having an average hydroxyl group per molecule value greater than zero including 2.0 or less, and optionally, additionally, a polyphenylene oxide having an average hydroxyl group per molecule value greater than zero including 1.0 or less.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: December 9, 1980
    Assignee: General Electric Company
    Inventors: George R. Loucks, Dwain M. White
  • Urethane-coupled block polymers of quinone-coupled polyphenylene oxides
    Patent number: 4238581
    Abstract: Linear, branched and/or cross-linked urethane-coupled block polymers of quinone-coupled polyphenylene oxides are described. The polymers are prepared by contacting polyfunctional isocyanates with quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than zero including 2.0 or less. The polymers either alone or in combination with other polymers can be formed into useful articles of manufacture by conventional molding, extruding, etc., processing techniques.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: December 9, 1980
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Oxidation corrosion resistant superalloys and coatings
    Patent number: 4237193
    Abstract: An article of manufacture having improved high temperature oxidation and corrosion resistance comprising: (a) a superalloy substrate containing a carbide reinforcing phase, and (b) a coating consisting of chromium, aluminum, carbon, at least one element selected from iron, cobalt or nickel, and optionally an element selected from yttrium or the rare earth elements.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: December 2, 1980
    Assignee: General Electric Company
    Inventors: Melvin R. Jackson, John R. Rairden, III
  • Quinone-coupled polyphenylene oxides
    Patent number: 4234706
    Abstract: Quinones and polyphenylene oxides are reacted to provide quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than the average hydroxyl group value associated with polyphenylene oxide reactants. The resulting new polymers have improved color and in combination with styrene resins provide thermoplastic compositions having improved chemical and physical properties.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: November 18, 1980
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Carbonylation process
    Patent number: 4234504
    Abstract: A carbonylation process which comprises contacting a .beta.-fluoroalkanol, carbon monoxide, a base, and the Group IIB element mercury present in an oxidation state greater than zero. The resulting .beta.-fluoroaliphatic carbonates can be employed in combination with alkanols and/or phenols to prepare aliphatic and aromatic mono- and polycarbonates. The resulting carbonates are useful in a wide variety of applications, especially polycarbonates which can be molded or formed into films, sheets, fibers, laminates, or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: November 18, 1980
    Assignee: General Electric Company
    Inventors: John E. Hallgren, William E. Smith
  • Polyesterimide resins and synthesis thereof
    Patent number: 4233435
    Abstract: An improved substantially solvent-free process for preparing phthalate-moiety based polyesterimide resins, new resins prepared by the process, and substrates (e.g., electrical conductors) coated with compositions comprising the new resins are described.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: November 11, 1980
    Assignee: General Electric Company
    Inventors: Edith M. Boldebuck, Eugene G. Banucci, Martin A. Byrne